Alta

On October 4, 2023, the United Soccer League announced that the city of Lancaster, California, had been awarded a USL League One expansion team which would start play in the 2025 season. John Smelzer, an entrepreneur who worked with the United States Soccer Federation for the 1994 FIFA World Cup, was announced as founder and president.

On May 16, 2024, Brian Kleiban was announced as the team's inaugural head coach. Kleiban had held coaching roles with FC Barcelona, Los Angeles FC and Chivas USA.

The club's name — AV Alta FC — and logo were unveiled on May 17, 2024. Former U.S. international and Major League Soccer player Miguel Ibarra, who hails from the area, was announced as the club's first player on December 9, 2024.

In their first match in club history, the club lost to the South Georgia Tormenta FC 2–0 away. However, in their inaugural match in both the U.S. Open Cup and at the Lancaster Municipal Stadium, AV Alta won 3–1 over the Ventura County Fusion, with Jerry Desdunes scoring the first goal in club history.